Happy Valley (2014): Sally Wainwright Remembers... Happy Valley

Writer Sally Wainwright looks back on the origins of her Bafta-winning drama Happy Valley, which first appeared on the nation’s TV screens in 2014. She reveals just how happy the early days really were - sharing the inside story of how the show first came together, the challenges faced, and the pressures of living up to expectations once the series established itself as an acclaimed success.